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Method for operating a vertical packaging machine and vertical packaging machine

a technology of vertical packaging machine and packaging machine, which is applied in the direction of packaging goods type, transportation and packaging, liquid materials, etc., can solve the problems of different sizes of packaging, and achieve the effects of avoiding slippage, preventing slippage or the risk of slippage, and improving the drive of advance modules on the laminar film

Active Publication Date: 2013-11-14
ULMA PACKAGING SCOOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method for improving the packaging process of laminar films by using controlled displacement modules. These modules automatically adjust the distance between the forming tool and the drive belts in each advance module, ensuring that they come into contact with the laminar film and preventing slippage. This method also reduces the need for manual adjusting, saves time and prevents human errors. Additionally, it reduces wear of the belts and optimizes the adjusting of the drive belts, resulting in a drastic reduction in the number of defective packages.

Problems solved by technology

When slippage occurs, the movement of the laminar tube for generating a package is not correct, which may lead to packages of different sizes being generated, said packages being considered defective.

Method used

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  • Method for operating a vertical packaging machine and vertical packaging machine
  • Method for operating a vertical packaging machine and vertical packaging machine
  • Method for operating a vertical packaging machine and vertical packaging machine

Examples

Experimental program
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Effect test

first embodiment

[0043]In a first embodiment, when the control means detects slippage it operates the corresponding displacement module 7 so that the advance module 3 moves towards the forming tool 2. To determine the slippage between a drive belt 30 and the laminar tube 5 the advance of the laminar tube 5 is measured and the advance of the drive belt 30 is measured and the two values are compared. It is determined that there is slippage if they are different values or if the difference between the two values measured is greater than a predetermined relative advance value.

[0044]In such an embodiment the detection means may comprise probes, optical sensors or other detection members capable of detecting the movement of the laminar tube 5 or the movement of the laminar film 4. In the event that the optical sensor is used, the laminar tube 5 or the laminar film 4 may comprise a plurality of marks distributed uniformly and longitudinally, which are detected by the optical sensor.

[0045]This control stage...

second embodiment

[0046]In a second embodiment the control means detects the risk of slippage by measuring the distance of the respective advance module 3 or the respective drive belt 30 in relation to the zero position of the forming tool 2, and comparing said distance with a predetermined distance. The predetermined distance is optimised to drive and move without slippage the laminar tube 5, without there being excessive pressure that leads to higher consumption of energy in the case of vertical friction-type machines, a risk of the laminar tube 5 sticking to the forming tool in vacuum-type machines, or excessive wear of the belt 30 both in friction-type machines and in vacuum-type machines with elements added to the laminar tube 5 or the laminar film 4.

[0047]In this second embodiment, it is determined that there is a risk of slippage if the distance measured does not coincide substantially with the predetermined distance. In this case, the control means operate the displacement module 7 of the cor...

fourth embodiment

[0049]In a fourth embodiment the packaging operation comprises a vacuum operation during which the vacuum is induced by means of the vacuum pump on the laminar tube 5 so that each belt 30 holds and drives the laminar tube 5. In the control operation, the risk of slippage of the corresponding belt 30 and the laminar tube 5 is detected automatically, the vacuum level being measured and it being determined that there is a risk of slippage if the vacuum level measured is smaller than a predetermined threshold vacuum level, the predetermined threshold vacuum level being that which optimally allows the movement of the laminar tube 5 in relation to each belt 30 without there being an excess of power consumption.

[0050]The detection means may comprise a vacuum switch (not shown in the figures), which is adapted to determine the vacuum level provided by the vacuum pump, the vacuum switch being connected to the control means. These types of elements are conventional, and what they actually do ...

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Abstract

According to some implementations a packaging operation is provided that includes a stage for the continuous feeding of a laminar film, a stage for the forming of the laminar film with a laminar tube being obtained, and a drive stage in which by means of at least two drive belts the movement of the laminar tube is caused. The packaging operation also includes a control operation in which the position of the drive belt in relation to the forming tool is controlled when slippage or risk of slippage of at least one of the drive belts with respect to the laminar tube is detected.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application relates to and claims the benefit and priority to European Patent Application No. 12382175, filed May 14, 2012.TECHNICAL FIELD[0002]The invention relates to a method for operating a packaging machine, in particular of a vertical packaging machine, and the vertical packaging machine.BACKGROUND[0003]There are known vertical packaging machines that comprise a feeder that supplies a laminar film, a forming tool adapted to give a tubular shape to the laminar film, forming a laminar tube, and at least two advance modules, each one of which comprises at least one drive belt arranged facing the forming tool. The drive belts, as they move, cause the movement of the laminar tube towards one end of the exit of the forming tool. In addition, these machines comprise longitudinal sealing means adapted to seal longitudinally the two longitudinal ends of the laminar film that forms the laminar tube, and transverse cutting and sealing mea...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65B1/02
CPCB65B1/02B65B41/16B65B51/303B65B57/04B65B9/2028B65B9/213B65B9/207
Inventor OTXOA-AIZPURUA CALVO, ALBERTOOROBENGOA CRUCELAEGUI, MIKEL
Owner ULMA PACKAGING SCOOP
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